I watched this with my daughter. Not sure it was the most appropriate film to do so and at times, she averted her eyes. We had watched the series and had enjoyed it. We are also watching Jack Whitehall in Fresh Meat (my daughter self censors herself when it comes to this) and the characters are similar, but with his accent, playing a part other than being posh and entitled is a bit difficult. But he plays these comedic roles well.
Normally, I would say that the film is too predictable and corny and if you are watching this without watching the TV show, it may not be as enjoyable. But taken in context of the show, this is enjoyable and full of laughs. If you do not enjoy the series, you will not enjoy this. Saying that, it is a bit more slap stick than what I am used to with the BBC show.
It was nice to see bits of Cornwall such as the Eden project which we had visited in the past. My daughter was not able remember this, but she was very young when we had been there. I would like to take them back, but with the plague being an issue, I am not sure when this will be possible again. One day...